SB2026081141 - Multiple vulnerabilities in Microsoft Windows Graphics Kernel

Description

This security bulletin contains information about 3 vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2026-61346)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Graphics Kernel. A local user can gain elevated privileges on the target system.

2) Use-after-free (CVE-ID: CVE-2026-62774)

CWE-ID: CWE-416 - Use After Free

CVSSv4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a loca user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Graphics Kernel. A local user can gain elevated privileges on the target system.

3) NULL pointer dereference (CVE-ID: CVE-2026-62702)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in Windows Graphics Kernel. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61346
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62774
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62702